Filter holder etc for 77mm filter thread

[Graulges]

My daughter wants to use Ilford SFX 200 with her Mamiya RB67 and will need to fit an IR filter to the lens filter size 77mm. Can any body tell me what she needs to get, holder, adaptor ring, filter? She's a student so budget is a massive consideration. Thanks for any advice/suggestions.

 

[33L]

if doing IR you want a good light seal so a screw in i would presume is a must.

 

[Graulges]

Hadn't thought of that. Thanks